Sounds like a good blend.Smoking a test bowl of my first home-blending experiment. Calling it an 'Almost English':
50 g Sutliff 507-S
50 g Low Country Natural Virginia
50 g C&D Izmir Turkish
50 g Sutliff 515 RC-1
Tastes very good now, I think even a few months will help marry things up and make it even better.